rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=b1b/1/0x4000000000000002 softirq=30907/30912 fqs=2100 
	(detected by 1, t=10505 jiffies, g=39833, q=2382)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11858 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:perf_tp_event+0x84/0xb50 kernel/events/core.c:10029
Code: 41 48 c7 44 24 48 5c 9f a3 8b 48 c7 44 24 50 70 df 96 81 48 8d 4c 24 40 48 c1 e9 03 48 b8 f1 f1 f1 f1 f1 f1 f1 f1 48 89 04 19 <48> b8 f2 f2 f2 f2 f2 f2 f2 f2 48 89 44 19 28 48 89 4c 24 38 c7 44
RSP: 0018:ffffc900034af480 EFLAGS: 00000802
RAX: f1f1f1f1f1f1f1f1 RBX: dffffc0000000000 RCX: 1ffff92000695e98
RDX: ffffe8ffffa65000 RSI: 0000000000000001 RDI: 0000000000000116
RBP: ffffc900034af6e8 R08: ffff8880b9035120 R09: ffffe8ffffa00af8
R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffe8ffffa00af8
R13: ffffe8ffffa65000 R14: ffffc900034af500 R15: 0000000000000014
FS:  0000555583fa1500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f608d058358 CR3: 000000007e893000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900034af940 EFLAGS: 00000206
RAX: 61a7d6e9987a5800 RBX: 1ffff92000695f2c RCX: 61a7d6e9987a5800
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a4c0
RBP: ffffc900034afa20 R08: dffffc0000000000 R09: fffffbfff1ff7a2e
R10: fffffbfff1ff7a2e R11: 1ffffffff1ff7a2d R12: ffffffff8c120b00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 mod_objcg_mlstate+0x225/0x2d0 mm/memcontrol.c:832
 drain_obj_stock+0x1ec/0x370 mm/memcontrol.c:3203
 refill_obj_stock+0x121/0x440 mm/memcontrol.c:3242
 memcg_slab_free_hook+0x157/0x1f0 mm/slab.h:364
 do_slab_free mm/slub.c:3437 [inline]
 slab_free mm/slub.c:3505 [inline]
 kmem_cache_free+0xcd/0x210 mm/slub.c:3520
 sk_prot_free net/core/sock.c:1903 [inline]
 __sk_destruct+0x569/0x840 net/core/sock.c:1991
 inet_release+0x139/0x180 net/ipv4/af_inet.c:432
 __sock_release net/socket.c:649 [inline]
 sock_close+0xd5/0x240 net/socket.c:1336
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f608ce5f84a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007ffd04e6df20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f608ce5f84a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffd04e6df7c R08: 00007ffd04e6d86c R09: 0079746972756365
R10: 00007ffd04e6d8d0 R11: 0000000000000293 R12: 0000000000000063
R13: 00000000000927c0 R14: 000000000003ca46 R15: 00007ffd04e6dfd0
 </TASK>